157.19% is the change from 320 to 823
Calculation steps:
[( 823 - 320 ) ÷ 320] x 100 = 157.19%
Formula
Percentage change = [(823 - 320) / 320] x 100
Subtract the new number by the original number
823 - 320 = 503
503 ÷ 320 = 1.571875
1.571875 x 100 = 157.19%